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Finding the Fourth Proportional to 1,017.63, 1,527.12 and 469.80

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Solution

The fourth proportional to 1,017.63, 1,527.12 and 469.80 is: 705.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,017.63 : 1,527.12 = 469.80 : x
  2. Step 2: Convert to fraction form
    1,017.63/1,527.12 = 469.80/x
  3. Step 3: Cross multiply
    1,017.63x = 1,527.12 × 469.80
  4. Step 4: Simplify right side
    1,017.63x = 717,440.98
  5. Step 5: Solve for x
    x = 717,440.98/1,017.63
  6. Step 6: Final answer
    x = 705.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.